You and Daniel are right - you will be needing another block to be able to use the flash memory controller to program(0)/erase(1) bits into flash.

And regarding the DataMem block, it does use the "yellow link" as described by you (the system RAM controller).

Unfortunately we do not have such a block for now, but you can import the example from the SDK for MPC5744x that comes with the S32 Design Studio - it shows how to use FLASH_DRV* functions to program and erase flash. You can find more documentation in